/Engine/Source/Runtime/AugmentedReality/Public/ARTrackable.h
void UpdateFaceGeometry ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FARSupportInterface](API\Runtime\AugmentedReality\FARSupportInterface), ESPMode::ThreadSafe > & InTrackingSystem, uint32 FrameNumber, double Timestamp, const FTransform & InTransform, const FTransform & InAlignmentTransform, FARBlendShapeMap & InBlendShapes, [TArray](API\Runtime\Core\Containers\TArray)< FVector > & InVertices, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & Indices, [TArray](API\Runtime\Core\Containers\TArray)< FVector2D > & InUVs, const FTransform & InLeftEyeTransform, const FTransform & InRightEyeTransform, const FVector & InLookAtTarget )